Abstract
A common assumption in medical image registration is that the estimation of a globally continuous deformation field is plausible in reality. However, a sliding behavior of adjacent organ boundaries (e.g. lung and ribcage) cannot be described in a plausible way by a continuous deformation field. In this paper, we address this issue with a novel registration framework that explicitly models sliding of interfaces and can preserve discontinuities in the deformation field along predefined organ boundaries. Incorporated methods involve constrained nonlinear registration and a finite element discretization on unstructured tetrahedral meshes. Evaluation is based on the freely available DIR-Lab datasets.
Original language | English |
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Title of host publication | Bildverarbeitung für die Medizin 2015 |
Publisher | Springer Vieweg, Wiesbaden |
Publication date | 01.01.2015 |
Publication status | Published - 01.01.2015 |